碳刷发热、刷辫变色怎样处理?

题型:问答题 简答题

问题:

碳刷发热、刷辫变色怎样处理?

考点:发电工(动力工)发电工(动力工)题库
题型:问答题 简答题

孕早期用药对胎儿的影响不包括以下哪项()。

A.用药时的胎龄

B.药物的性质及毒性强弱

C.用药的剂量、途径

D.用药的方法

E.药物的价格

题型:问答题 简答题
情景反应
(从方框中选择恰当的句子完成下面的对话,并将符合题意的选项用2B铅笔涂在答题卡的相应位置上。其中有两项多余。每小题1分,共5分)
A. Have you ever been here before?
B. It’s beautiful.
C. How long have you been in Dandong?
D. Have a good time!
E. The seafood and the noodles are really delicious.
F. What places have you visited?
G. Where will you go then?
A: The traffic is very busy in the morning, isn’t it?
B: Yes, it is. Do you work here in Dandong?
A: No, I don’t. I’m just a tourist.
B:    小题1:
A: Yes, I have been here three times.
B:   小题2:
A: I have visited the Yalu River Bridge, Jinjiang Park and Mount Fenghuang.
B: What do you think of Dandong?
A:    小题3:  It has changed a lot in the past few years.
B: Do you like the food here?
A: Yes, I do.   小题4:   I like them very much.
B: So do I. Here comes the bus!   小题5:
A: Thank you. Bye-bye!
B: Bye!
题型:问答题 简答题

不属于含氯消毒剂范畴的化合物是()

A.漂白粉

B.碱石灰

C.84消毒液

D.次氯酸钙

E.二氯异氰尿酸钠

题型:问答题 简答题

决定人能否发展的是()

A.家庭环境

B.社会环境

C.环境与教育

D.遗传素质

E.生理解剖特点

题型:问答题 简答题

关于呼吸阀的作用,下列说法错误的是()

A、自动控制油罐气体通道的启闭

B、对油罐起到超压保护作用

C、减少油品蒸发损耗

D、阻止空气的进入

更多题库